Air valve



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, 3mm /4 -WvaZ'er I, Jrezzf Patented Nov. 15, 1949 AIR VALVE Alexander Duncan Walker and John Earl Drew, North Bergen, N. J.

Application November 17, 1947, Serial No. 786,442,

1 Claim. l

This invention relates to air valves and is an improvementl over the air valve embodied in our copending application, Serial No. 714,539, for Air valves, led December 6, 1946.

An object of this invention is to provide an air valve adapted to be mounted on an iniatable body which eliminates the use of springs and provides a suitable means whereby the body may be inflated and after inating the valve may be moved under pressure from the interior to closed or sealing position.

Another object of this invention is to provide an air valve of this kind which is of simple construction and includes a slidable valve plug embodying a sealing gasket at the inner end thereof for engagement against a valve seat formed on the inner end of the valve housing.

A further object of this invention is to provide an air valve which may be made at least partly out of plastic material and which is formed of a minimum of parts.

To the foregoing objects, and others which may hereinafter more fully appear, the invention consists of the novel construction, combination and arrangement of parts, as will be more specifically referred to and illustrated in the accompanying drawings, but it is to be understood that changes, variations, and modications may be resorted to which fall within the scope of the invention as claimed.

In the drawing:

Figure 1 is a detailed side elevation of an air valve constructed according to an embodiment of this invention, showing the valve mounted on an inatable body which is partly broken away and in section.

Figure 2 is an outer end elevation of the device.

Figure 3 is a sectional view taken on the line 3 3 of Figure 2.

Figure 4 is a sectional view similar to Figure 3 but at right angles thereto'.

Figure 5 is a sectional view taken on the line 5-5 of Figure 4.

Referring to the drawing, the numeral Iii designates generally an inflatable body which may be formed out of rubber or the like. The body i@ has mounted in a reinforcing nipple l I thereof a valve housing generally designated as l2. The valve housing I2 includes a sleeve i3 which extends through the nipple I I and terminates at its outer end substantially flush with the outer end of the nipple I I. The inner end of the sleeve I3 is provided with an annular flange I4 abutting against the inside of the body I0 and the flange I 4 is formed on the inner side thereof with a valve seat l5.

A valve plug I6 loosely engages in the sleeve I3 and comprises a hollow member which is formed with polygonal faces I1 adapted to slidably engage in a polygonal bore I8 formed in the sleeve I3. The hollow member or plug I6 includes a reduced nipple I8 formed with a pair of diametrically opposed openings I9 and the plug I6 also includes an inner end wall 20 formed with an annular ange 2l. An annular gasket 22 is disposed about the end member 2l! and engages against the outer side of the annular flange 2| so that when the plug I6 is moved outwardly the gasket 22 will engage against the valve seat I5.

The plug I6 also includes an outer threaded portion 23 which is engaged by a nut 24. The nut 24 is formed with a counterbore 25 Within which the crimped outer end 26 of the plug I5 is adapted to loosely engage. In this manner after the plug I6 has been crimped at its outer end the nut 24 cannot be unthreaded from the threaded shank 23.

Rotation of the nut 24 in a clockwise direction will draw plug I 6 outwardly to closed position. Rotation of nut 24 in a counter-clockwise direction and holding of the nut 24 against the outer end of the sleeve I3 will cause plug I6 to move inwardly so that the bore 2l of the plug I 6 will communicate with the interior ofthe body ID through the openings I9. After the body IU has been iniiated to the desired degree the plug I5 can be quickly moved outwardly to closed position by pulling the nut 24 outwardly and drawing therewith plug I6 to engage gasket 22 on seat l5. Nut 24 may then be threaded tight on plug I6 to prevent inward movement of the plug to open position.

We claim:

An air valve for an inatable body comprising a tubular member adapted to be fixed in said body, a ange carried by the inner end of said member and formed with a valve seat, said member having a polygonal bore therethrough, a valve plug having a polygonal outer surface slidable in said bore, a compressible gasket carried by said plug having a counter bore within which said rib is 10 adapted to engage to prevent complete removal of said nut from said member.

ALEXANDER DUNCAN WALKER. JOHN EARL DREW.

REFERENCES CITED The following references are of record in the le of this partent:

UNITED STATES PATENTS Number Name Date 503,300 Welch Aug. 15, 1893 505,486 ASchrader Sept. 26, 1893 975,646 Sidney Nov. 15, 1910 1,237,041 Hilding Aug. 14, 1917 1,542,704 Kirkpatrick June 16, 1925 1,823,018 Wolfard Sept. 15, 1931 2,318,964 Parker May 11, 1943 

